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A 40.68-MHz, 200-ns-Settling Active Rectifier for mm-Sized Implants

A 40.68-MHz, 200-ns-Settling Active Rectifier for mm-Sized Implants 150 150
Author(s): Ronald Wijermars, Yi-Han Ou-Yang, Sijun Du, Dante G. Muratore

Abstract:

This letter describes a fast-settling active rectifier for a 40.68 MHz wireless power transfer receiver for implantable applications. Fast-settling and low power are achieved through a novel direct voltage-domain compensation technique. The rectifier maintains high efficiency during load and link variations required for downlink communication. The system was fabricated in 40nm …

Published in: IEEE Solid-State Circuits Letters
Page(s): 305 – 308
Year of Publication: 2025
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2025.3611484
Publisher: IEEE

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A Two-Stage 12–1-V Converter Featuring Regulated Resonant SC Regulators and Collaborative Control Scheme

A Two-Stage 12–1-V Converter Featuring Regulated Resonant SC Regulators and Collaborative Control Scheme 150 150
Author(s): Shengdao Ren, Yukan Du, Menglian Zhao, Zhichao Tan, Chushan Li, Yong Ding, Wuhua Li, Wanyuan Qu

Abstract:

In the field of power converters for data centers, the two-stage architecture has received widespread attentions due to its various advantages. Especially, the switched-capacitor voltage regulator (SCVR) becomes popular as the second-stage converter owing to its high efficiency and power density. However, the SCVR suffers from poor voltage regulation and …

Published in: IEEE Journal of Solid-State Circuits
Page(s): 1 – 14
Year of Publication: 2025
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2025.3609744
Publisher: IEEE

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A Fast Transient Response Fully Integrated LDO With a Novel Resetting Oscillator Control Method

A Fast Transient Response Fully Integrated LDO With a Novel Resetting Oscillator Control Method 150 150
Author(s): Masoud Kargaran, Amir Besharati Rad, Ali Medi

Abstract:

This article introduces a novel resetting oscillator regulator (ROR) control method for low-dropout (LDO) regulators, designed to achieve fast settling times for both load and reference input steps. The proposed ROR integrates a high-speed loop that independently functions as an oscillator in a closed-loop configuration, along with a separate high-rate …

Published in: IEEE Journal of Solid-State Circuits
Page(s): 1 – 13
Year of Publication: 2025
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2025.3607941
Publisher: IEEE

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A Millimeter-Wave Direct Digital Transmitter Using Multiphase Subharmonic Switching PA

A Millimeter-Wave Direct Digital Transmitter Using Multiphase Subharmonic Switching PA 150 150
Author(s): Soumya Mahapatra, Mostafa Ayesh, Ce Yang, Mayank Palaria, Shiyu Su, Aoyang Zhang, Mike Shuo-Wei Chen

Abstract:

This article presents a direct digital transmitter (TX) employing a multiphase subharmonic switching (MP-SHS) power amplifier (PA) to achieve both high peak and power back-off (PBO) efficiency with wide signal bandwidth. A phase-shifted subharmonic (SH) local oscillator (LO) divider is proposed to suppress SH spurs with minimal implementation overhead by …

Published in: IEEE Journal of Solid-State Circuits
Page(s): 1 – 16
Year of Publication: 2025
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2025.3605564
Publisher: IEEE

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A Linear Dynamic Voltage Scaling Technique With Adaptive Minimum Voltage Headroom Tracking for Implantable Neurostimulation

A Linear Dynamic Voltage Scaling Technique With Adaptive Minimum Voltage Headroom Tracking for Implantable Neurostimulation 150 150
Author(s): Kai Cui, Honglei Xu, Yingduo Duan, Yan Lu, Xiaoya Fan, Yanzhao Ma

Abstract:

This letter presents a linear dynamic voltage scaling (DVS) technique using a dual-loop multistage charge-pump maintaining the minimum voltage headroom for implantable neurostimulation. By adopting an analog DVS with adaptive feedback divider, the stimulus current source could be always kept operating at the boundary of the saturation region and the …

Published in: IEEE Solid-State Circuits Letters
Page(s): 261 – 264
Year of Publication: 2025
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2025.3608096
Publisher: IEEE

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A Low-EMI, High-DR Class-D Audio Amplifier With Double-Sided Voltage-Boosting Modulation

A Low-EMI, High-DR Class-D Audio Amplifier With Double-Sided Voltage-Boosting Modulation 150 150
Author(s): Jhuang-Wei Cyue, Tai-Haur Kuo

Abstract:

This article presents a digital-input class-D audio amplifier (CDA) that employs a double-sided voltage-boosting (DSVB) modulation scheme, integrating a capacitively coupled chopper amplifier (CCCA) with a single-inductor buck–boost power stage. The CCCA achieves a high dynamic range (DR) due to its very low noise floor and is implemented with …

Published in: IEEE Journal of Solid-State Circuits
Page(s): 1 – 12
Year of Publication: 2025
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2025.3602261
Publisher: IEEE

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A 0-to- 10μF Off-Chip Output Capacitor-Scalable Boost Converter Achieving 96.68% Peak Efficiency

A 0-to- 10μF Off-Chip Output Capacitor-Scalable Boost Converter Achieving 96.68% Peak Efficiency 150 150
Author(s): Hyeon-Ji Choi, Joo-Mi Cho, Hyo-Jin Park, Seok-Jun Lee, Sung-Wan Hong

Abstract:

This letter presents an off-chip output capacitor (CO)-scalable (OCS) boost converter. The proposed OCS boost converter is possible to operate both with and without the off-chip CO. In addition, it operates in a whole conversion ratio (CR) range over 1 while maintaining a small current ripple of an inductor, resulting …

Published in: IEEE Solid-State Circuits Letters
Page(s): 233 – 236
Year of Publication: 2025
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2025.3594739
Publisher: IEEE

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Polar-Axis Orientation Fluctuations and the Impact on the Intrinsic Variability in Ferroelectric Capacitors

Polar-Axis Orientation Fluctuations and the Impact on the Intrinsic Variability in Ferroelectric Capacitors 150 150
Author(s): Wei Zhang, Jianze Wang, Xuanyao Fong

Abstract:

We utilized phase-field simulations to investigate the effects of polar-axis (PA) orientation fluctuations on the extrinsic properties of single ferroelectric (FE) grains, focusing on the coercive electrical field (EC) and the remnant polarization (Pr). The underlying mechanisms through which PA orientation fluctuations influence polarization behavior are studied to gain insights …

Published in: IEEE Journal on Exploratory Solid-State Computational Devices and Circuits
Page(s): 74 – 80
Year of Publication: 2025
Electronic ISSN: 2329-9231
DOI: 10.1109/JXCDC.2025.3586589
Publisher: IEEE

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A 10.9nV/√Hz, 74.9dB-DR, 20MS/s Ultrasound Analog Front End for Fully-Digital Beamforming

A 10.9nV/√Hz, 74.9dB-DR, 20MS/s Ultrasound Analog Front End for Fully-Digital Beamforming 150 150
Author(s): Changde Ding, Yan Zhu, Pengjie Wang, Zhiliang Hong, Jiawei Xu

Abstract:

This letter presents a compact and energy-efficient analog front-end (AFE) circuit for fully-digital beamforming in endoscopic and catheter-based 3D-ultrasound imaging. The AFE converts single-ended analog input from each transducer element into a 10-bit digital output through a low-noise amplifier (LNA) and a 20 MS/s SAR ADC. To minimize chip area …

Published in: IEEE Solid-State Circuits Letters
Page(s): 1 – 1
Year of Publication: 2025
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2025.3581584
Publisher: IEEE

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